<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="generator" content="rustdoc">
    <meta name="description" content="API documentation for the Rust `Expr` enum in crate `regex_syntax`.">
    <meta name="keywords" content="rust, rustlang, rust-lang, Expr">

    <title>regex_syntax::Expr - Rust</title>

    <link rel="stylesheet" type="text/css" href="../normalize.css">
    <link rel="stylesheet" type="text/css" href="../rustdoc.css">
    <link rel="stylesheet" type="text/css" href="../main.css">
    

    
    
</head>
<body class="rustdoc enum">
    <!--[if lte IE 8]>
    <div class="warning">
        This old browser is unsupported and will most likely display funky
        things.
    </div>
    <![endif]-->

    

    <nav class="sidebar">
        
        <p class='location'>Enum Expr</p><div class="block items"><ul><li><a href="#variants">Variants</a></li><li><a href="#methods">Methods</a></li><li><a href="#implementations">Trait Implementations</a></li></ul></div><p class='location'><a href='index.html'>regex_syntax</a></p><script>window.sidebarCurrent = {name: 'Expr', ty: 'enum', relpath: ''};</script><script defer src="sidebar-items.js"></script>
    </nav>

    <nav class="sub">
        <form class="search-form js-only">
            <div class="search-container">
                <input class="search-input" name="search"
                       autocomplete="off"
                       placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
                       type="search">
            </div>
        </form>
    </nav>

    <section id='main' class="content">
<h1 class='fqn'><span class='in-band'>Enum <a href='index.html'>regex_syntax</a>::<wbr><a class="enum" href=''>Expr</a></span><span class='out-of-band'><span id='render-detail'>
                   <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
                       [<span class='inner'>&#x2212;</span>]
                   </a>
               </span><a class='srclink' href='../src/regex_syntax/lib.rs.html#97-179' title='goto source code'>[src]</a></span></h1>
<pre class='rust enum'>pub enum Expr {
    Empty,
    Literal {
        chars: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.char.html">char</a>&gt;,
        casei: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,
    },
    LiteralBytes {
        bytes: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;,
        casei: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,
    },
    AnyChar,
    AnyCharNoNL,
    AnyByte,
    AnyByteNoNL,
    Class(<a class="struct" href="../regex_syntax/struct.CharClass.html" title="struct regex_syntax::CharClass">CharClass</a>),
    ClassBytes(<a class="struct" href="../regex_syntax/struct.ByteClass.html" title="struct regex_syntax::ByteClass">ByteClass</a>),
    StartLine,
    EndLine,
    StartText,
    EndText,
    WordBoundary,
    NotWordBoundary,
    WordBoundaryAscii,
    NotWordBoundaryAscii,
    Group {
        e: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;,
        i: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;,
        name: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;,
    },
    Repeat {
        e: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;,
        r: <a class="enum" href="../regex_syntax/enum.Repeater.html" title="enum regex_syntax::Repeater">Repeater</a>,
        greedy: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>,
    },
    Concat(<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;),
    Alternate(<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;),
}</pre><div class='docblock'><p>A regular expression abstract syntax tree.</p>

<p>An <code>Expr</code> represents the abstract syntax of a regular expression.</p>
</div><h2 id='variants' class='variants'>Variants</h2>
<span id='variant.Empty' class='variant'><span id='Empty.v' class='invisible'><code>Empty</code></span></span><div class='docblock'><p>An empty regex (which never matches any text).</p>
</div><span id='variant.Literal' class='variant'><span id='Literal.v' class='invisible'><code>Literal</code></span></span><div class='docblock'><p>A sequence of one or more literal characters to be matched.</p>
</div><span class='docblock autohide sub-variant' id='variant.Literal.fields'><h3 class='fields'>Fields of <code>Literal</code></h3>

                           <table><tr><td id='variant.Literal.field.chars'><span id='Literal.v.chars.v' class='invisible'><code>chars:&nbsp;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.char.html">char</a>&gt;</code></span></td><td><div class='docblock'><p>The characters.</p>
</div></td></tr><tr><td id='variant.Literal.field.casei'><span id='Literal.v.casei.v' class='invisible'><code>casei:&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><div class='docblock'><p>Whether to match case insensitively.</p>
</div></td></tr></table></span><span id='variant.LiteralBytes' class='variant'><span id='LiteralBytes.v' class='invisible'><code>LiteralBytes</code></span></span><div class='docblock'><p>A sequence of one or more literal bytes to be matched.</p>
</div><span class='docblock autohide sub-variant' id='variant.LiteralBytes.fields'><h3 class='fields'>Fields of <code>LiteralBytes</code></h3>

                           <table><tr><td id='variant.LiteralBytes.field.bytes'><span id='LiteralBytes.v.bytes.v' class='invisible'><code>bytes:&nbsp;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code></span></td><td><div class='docblock'><p>The bytes.</p>
</div></td></tr><tr><td id='variant.LiteralBytes.field.casei'><span id='LiteralBytes.v.casei.v' class='invisible'><code>casei:&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><div class='docblock'><p>Whether to match case insensitively.</p>

<p>The interpretation of &quot;case insensitive&quot; in this context is
ambiguous since <code>bytes</code> can be arbitrary. However, a good heuristic
is to assume that the bytes are ASCII-compatible and do simple
ASCII case folding.</p>
</div></td></tr></table></span><span id='variant.AnyChar' class='variant'><span id='AnyChar.v' class='invisible'><code>AnyChar</code></span></span><div class='docblock'><p>Match any character.</p>
</div><span id='variant.AnyCharNoNL' class='variant'><span id='AnyCharNoNL.v' class='invisible'><code>AnyCharNoNL</code></span></span><div class='docblock'><p>Match any character, excluding new line (<code>0xA</code>).</p>
</div><span id='variant.AnyByte' class='variant'><span id='AnyByte.v' class='invisible'><code>AnyByte</code></span></span><div class='docblock'><p>Match any byte.</p>
</div><span id='variant.AnyByteNoNL' class='variant'><span id='AnyByteNoNL.v' class='invisible'><code>AnyByteNoNL</code></span></span><div class='docblock'><p>Match any byte, excluding new line (<code>0xA</code>).</p>
</div><span id='variant.Class' class='variant'><span id='Class.v' class='invisible'><code>Class(<a class="struct" href="../regex_syntax/struct.CharClass.html" title="struct regex_syntax::CharClass">CharClass</a>)</code></span></span><div class='docblock'><p>A character class.</p>
</div><span id='variant.ClassBytes' class='variant'><span id='ClassBytes.v' class='invisible'><code>ClassBytes(<a class="struct" href="../regex_syntax/struct.ByteClass.html" title="struct regex_syntax::ByteClass">ByteClass</a>)</code></span></span><div class='docblock'><p>A character class with byte ranges only.</p>
</div><span id='variant.StartLine' class='variant'><span id='StartLine.v' class='invisible'><code>StartLine</code></span></span><div class='docblock'><p>Match the start of a line or beginning of input.</p>
</div><span id='variant.EndLine' class='variant'><span id='EndLine.v' class='invisible'><code>EndLine</code></span></span><div class='docblock'><p>Match the end of a line or end of input.</p>
</div><span id='variant.StartText' class='variant'><span id='StartText.v' class='invisible'><code>StartText</code></span></span><div class='docblock'><p>Match the beginning of input.</p>
</div><span id='variant.EndText' class='variant'><span id='EndText.v' class='invisible'><code>EndText</code></span></span><div class='docblock'><p>Match the end of input.</p>
</div><span id='variant.WordBoundary' class='variant'><span id='WordBoundary.v' class='invisible'><code>WordBoundary</code></span></span><div class='docblock'><p>Match a word boundary (word character on one side and a non-word
character on the other).</p>
</div><span id='variant.NotWordBoundary' class='variant'><span id='NotWordBoundary.v' class='invisible'><code>NotWordBoundary</code></span></span><div class='docblock'><p>Match a position that is not a word boundary (word or non-word
characters on both sides).</p>
</div><span id='variant.WordBoundaryAscii' class='variant'><span id='WordBoundaryAscii.v' class='invisible'><code>WordBoundaryAscii</code></span></span><div class='docblock'><p>Match an ASCII word boundary.</p>
</div><span id='variant.NotWordBoundaryAscii' class='variant'><span id='NotWordBoundaryAscii.v' class='invisible'><code>NotWordBoundaryAscii</code></span></span><div class='docblock'><p>Match a position that is not an ASCII word boundary.</p>
</div><span id='variant.Group' class='variant'><span id='Group.v' class='invisible'><code>Group</code></span></span><div class='docblock'><p>A group, possibly non-capturing.</p>
</div><span class='docblock autohide sub-variant' id='variant.Group.fields'><h3 class='fields'>Fields of <code>Group</code></h3>

                           <table><tr><td id='variant.Group.field.e'><span id='Group.v.e.v' class='invisible'><code>e:&nbsp;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;</code></span></td><td><div class='docblock'><p>The expression inside the group.</p>
</div></td></tr><tr><td id='variant.Group.field.i'><span id='Group.v.i.v' class='invisible'><code>i:&nbsp;<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code></span></td><td><div class='docblock'><p>The capture index (starting at <code>1</code>) only for capturing groups.</p>
</div></td></tr><tr><td id='variant.Group.field.name'><span id='Group.v.name.v' class='invisible'><code>name:&nbsp;<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>&gt;</code></span></td><td><div class='docblock'><p>The capture name, only for capturing named groups.</p>
</div></td></tr></table></span><span id='variant.Repeat' class='variant'><span id='Repeat.v' class='invisible'><code>Repeat</code></span></span><div class='docblock'><p>A repeat operator (<code>?</code>, <code>*</code>, <code>+</code> or <code>{m,n}</code>).</p>
</div><span class='docblock autohide sub-variant' id='variant.Repeat.fields'><h3 class='fields'>Fields of <code>Repeat</code></h3>

                           <table><tr><td id='variant.Repeat.field.e'><span id='Repeat.v.e.v' class='invisible'><code>e:&nbsp;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;</code></span></td><td><div class='docblock'><p>The expression to be repeated. Limited to literals, <code>.</code>, classes
or grouped expressions.</p>
</div></td></tr><tr><td id='variant.Repeat.field.r'><span id='Repeat.v.r.v' class='invisible'><code>r:&nbsp;<a class="enum" href="../regex_syntax/enum.Repeater.html" title="enum regex_syntax::Repeater">Repeater</a></code></span></td><td><div class='docblock'><p>The type of repeat operator used.</p>
</div></td></tr><tr><td id='variant.Repeat.field.greedy'><span id='Repeat.v.greedy.v' class='invisible'><code>greedy:&nbsp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></td><td><div class='docblock'><p>Whether the repeat is greedy (match the most) or not (match the
least).</p>
</div></td></tr></table></span><span id='variant.Concat' class='variant'><span id='Concat.v' class='invisible'><code>Concat(<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;)</code></span></span><div class='docblock'><p>A concatenation of expressions. Must be matched one after the other.</p>

<p>N.B. A concat expression can only appear at the top-level or
immediately inside a group expression.</p>
</div><span id='variant.Alternate' class='variant'><span id='Alternate.v' class='invisible'><code>Alternate(<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html" title="struct alloc::vec::Vec">Vec</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;)</code></span></span><div class='docblock'><p>An alternation of expressions. Only one must match.</p>

<p>N.B. An alternate expression can only appear at the top-level or
immediately inside a group expression.</p>
</div><h2 id='methods'>Methods</h2><h3 class='impl'><span class='in-band'><code>impl <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#400-591' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.parse' class="method"><span id='parse.v' class='invisible'><code>fn <a href='#method.parse' class='fnname'>parse</a>(s: &amp;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -&gt; <a class="type" href="../regex_syntax/type.Result.html" title="type regex_syntax::Result">Result</a>&lt;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>&gt;</code></span></h4>
<div class='docblock'><p>Parses a string in a regular expression syntax tree.</p>

<p>This is a convenience method for parsing an expression using the
default configuration. To tweak parsing options (such as which flags
are enabled by default), use the <code>ExprBuilder</code> type.</p>
</div><h4 id='method.prefixes' class="method"><span id='prefixes.v' class='invisible'><code>fn <a href='#method.prefixes' class='fnname'>prefixes</a>(&amp;self) -&gt; <a class="struct" href="../regex_syntax/struct.Literals.html" title="struct regex_syntax::Literals">Literals</a></code></span></h4>
<div class='docblock'><p>Returns a set of literal prefixes extracted from this expression.</p>
</div><h4 id='method.suffixes' class="method"><span id='suffixes.v' class='invisible'><code>fn <a href='#method.suffixes' class='fnname'>suffixes</a>(&amp;self) -&gt; <a class="struct" href="../regex_syntax/struct.Literals.html" title="struct regex_syntax::Literals">Literals</a></code></span></h4>
<div class='docblock'><p>Returns a set of literal suffixes extracted from this expression.</p>
</div><h4 id='method.is_anchored_start' class="method"><span id='is_anchored_start.v' class='invisible'><code>fn <a href='#method.is_anchored_start' class='fnname'>is_anchored_start</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>Returns true if and only if the expression is required to match from
the beginning of text.</p>
</div><h4 id='method.has_anchored_start' class="method"><span id='has_anchored_start.v' class='invisible'><code>fn <a href='#method.has_anchored_start' class='fnname'>has_anchored_start</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>Returns true if and only if the expression has at least one matchable
sub-expression that must match the beginning of text.</p>
</div><h4 id='method.is_anchored_end' class="method"><span id='is_anchored_end.v' class='invisible'><code>fn <a href='#method.is_anchored_end' class='fnname'>is_anchored_end</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>Returns true if and only if the expression is required to match at the
end of the text.</p>
</div><h4 id='method.has_anchored_end' class="method"><span id='has_anchored_end.v' class='invisible'><code>fn <a href='#method.has_anchored_end' class='fnname'>has_anchored_end</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>Returns true if and only if the expression has at least one matchable
sub-expression that must match the beginning of text.</p>
</div><h4 id='method.has_bytes' class="method"><span id='has_bytes.v' class='invisible'><code>fn <a href='#method.has_bytes' class='fnname'>has_bytes</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>Returns true if and only if the expression contains sub-expressions
that can match arbitrary bytes.</p>
</div></div><h2 id='implementations'>Trait Implementations</h2><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#96' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&amp;self) -&gt; <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span></h4>
<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&amp;mut self, source: &amp;Self)</code><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div></span></h4>
<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#96' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, __arg_0: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></h4>
<div class='docblock'><p>Formats the value using the given formatter.</p>
</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#96' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&amp;self, __arg_0: &amp;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&amp;self, __arg_0: &amp;<a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a>) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h4>
<div class='docblock'><p>This method tests for <code>!=</code>.</p>
</div></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> for <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#96' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'></div><h3 class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="enum" href="../regex_syntax/enum.Expr.html" title="enum regex_syntax::Expr">Expr</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/regex_syntax/lib.rs.html#1142-1214' title='goto source code'>[src]</a></span></h3>
<div class='docblock'><p>This implementation of <code>Display</code> will write a regular expression from the
syntax tree. It does not write the original string parsed.</p>
</div><div class='impl-items'><h4 id='method.fmt-1' class="method"><span id='fmt.v-1' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span></h4>
<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
</div></div></section>
    <section id='search' class="content hidden"></section>

    <section class="footer"></section>

    <aside id="help" class="hidden">
        <div>
            <h1 class="hidden">Help</h1>

            <div class="shortcuts">
                <h2>Keyboard Shortcuts</h2>

                <dl>
                    <dt>?</dt>
                    <dd>Show this help dialog</dd>
                    <dt>S</dt>
                    <dd>Focus the search field</dd>
                    <dt>&larrb;</dt>
                    <dd>Move up in search results</dd>
                    <dt>&rarrb;</dt>
                    <dd>Move down in search results</dd>
                    <dt>&#9166;</dt>
                    <dd>Go to active search result</dd>
                    <dt>+</dt>
                    <dd>Collapse/expand all sections</dd>
                </dl>
            </div>

            <div class="infos">
                <h2>Search Tricks</h2>

                <p>
                    Prefix searches with a type followed by a colon (e.g.
                    <code>fn:</code>) to restrict the search to a given type.
                </p>

                <p>
                    Accepted types are: <code>fn</code>, <code>mod</code>,
                    <code>struct</code>, <code>enum</code>,
                    <code>trait</code>, <code>type</code>, <code>macro</code>,
                    and <code>const</code>.
                </p>

                <p>
                    Search functions by type signature (e.g.
                    <code>vec -> usize</code> or <code>* -> vec</code>)
                </p>
            </div>
        </div>
    </aside>

    

    <script>
        window.rootPath = "../";
        window.currentCrate = "regex_syntax";
    </script>
    <script src="../main.js"></script>
    <script defer src="../search-index.js"></script>
</body>
</html>